الوصف

　　Our company has elaborately ressarched and developed zhaiyou series of door rellers which feature reliable performance, low opearating noise, small size, light weight, complete functions and easy upgrading and matching ***** company produces common roller shutter door, smokeproof roller shutter door and louver door etc ideal matched products for roller shutter door. 1, They could be operated through s, opening and closing of shutter door are driven electrically, and the stop could control travel accurately. 2, When there is no power supply, pulling hand chain could enable the door to rise slowly, pulling deadweight lowering dragline could enable the door to go down at constant speed by deadweight. 3, The door could be positioned accurately at any location with in the travel. 4, Remote control and password adopted could enable remote control of opening and closing of roller shutter door. 5, They are equipped with fireproof type electric control box and smoke sensitive and temperature sensitive probes which could reach the goal of fire isolation and smoke isolation.Performance meets the requirement of GB*******3. 6, If they are equipped with different emergency door closing units, lowering of roller shutter door could be controlled in conditions of no man and no power supply.